- About the different ways Direct Mail can send email
 - About e3 Delivery Service
 - About draft campaigns
 - About image and web hosting
 - Sending to duplicate email addresses
 - Canceling delivery of your email campaign
 - Protecting your email reputation
 - Choosing the best timing for sending email campaigns
 - Choosing which addresses to send to
 - Creating a Direct Mail account
 - Enabling SMTP Access
 - Configuring Direct Mail to send via your SMTP server
 - Finding out how many email addresses you've sent to this month
 - Why emails may take a long time to be delivered
 - If sending via your own email server seems unusually slow
 - About rate limiting
 - If you experience SMTP delivery errors
 - If open and click tracking is unavailable
 - If your address group fails to sync
 - If your attachment is too large
 - If your campaign status is "In Review"
 - If your email ends up in Gmail's Promotions tab
 - If your email ends up in the Spam folder
 - Limiting the amount of email sent through your mail server
 - Preventing your computer from sleeping while sending email
 - Removing the Direct Mail logo from your email footer
 - Resending an email to some recipients
 - Scheduling to send at a future date
 - Sending Your Email Campaign at the Perfect TimeBlog
 - Sending email using e3 Delivery Service
 - Sending email using your Microsoft account
 - Sending email using your Gmail or Google Workspace account
 - Sending email using your own email server
 - Sending email using your Yahoo! Mail account
 - Sharing email campaigns on social media (Facebook, Twitter, etc.)
 - Tagging a campaign for Google Analytics